Valve-grinding tool



H. C. HUGHES.

VALVE GRlNDlNG TOOL. A'PPLICATlON FILED APR.2, 1920.

Patented Nov. 29, 1921.

ire sra rns Parser-Fries.

HARRYlC. HUGHES, OLE CINCINNATI, 0HIO..

VALVE-GRINDING ILOOL.

seasvv.

Application filed April 2,

My invention relates to valve grinder tools, which are adapted for grasping valves during the grinding operation, whereby they may be lifted and twisted on their seats in the accustomed manner for grinding valves.

It has special application to valves which are fitted with a pair of holes such as are ordinarily employed with a spanner and has as its object the provision of an adjustable means for grasping the holes in such a valve, so as to permit the lifting of the same and the twisting of the same.

This object and other advantages to be noted I accomplish by that certain construction and arrangement of parts to be hereinafter more specifically pointed out and.

claimed.

In the drawings, Figure l is an elevation of the device. Fig. 2 is a longitudinal section thereof. Fig. 3 is a bottom plan view thereof.

, The body of the tool comprises a tapered bar 1 of suitable material, which is formed at its upper end with a hand hold 2 of any desired form. As shown the bar is merely rounded off in a cylindrical shape, but this is merely a simple manner of accomplishing my purpose. The bar has been successfully used when made of wood, and generally speaking wood will be found the most satisfactory material.

Running longitudinally along the bar from the handle end to the tapered end are preferably four slots 3, 3 and 4, 4E. The slots 3, 3 are the essential ones, and the slots 4, 4 will be found desirable in most instances.

In the slots 3, 3 are set long pins 5, 5 which preferably have their ends cut away at the side as shown at 6, 6. In the slots 4, 4 are set long pins 7, 7, which do not require flattened end portions. The pins and slots will preferably be of rectangular form. Set overthe bar are the desired number of sleeves or hands 8, which are preferably Specification of Letters Patent.

Patented Nov. 29,1921,

1920. Serial No. 370,849, r I

shrunk in place, tohold the pins in the slots but permit their sliding therein under pres driven down through the slots, until their ends are spaced apart to fit into the spaced holes 9, 9 in the valve as at 10. When the pins 7 are used they also are driven down so as to contact with the upper face of the valve.

The operator after setting the ends of the From operating thedevice the pins 5 are pins in the holes in the valve taps down the head of the bar, thereby forcing the tapered shape downwardly and tending to spread the ends of the pins. The spreading will cause the pins 5 to engage firmly in the holes in the valve, and the pins 7 will rest against a the upper surface of the valve and the tool against rocking.

The operator can then twist the valve against its seat and raise it for the insertion of grinding material, and in the course of his operations, as is customary.

The new tool can be employed with mechanical grinders as well as by hand, and I do not wish to be limited to the exact form described, as other means of wedging apart two engaging pins for a valve head, might readily embody the spirit of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A. valve grinding tool comprising a tapered bar, slots in the bar, pins in the slots and slidable endwise therein and adapted to be separated by the wedge action of the bar, retaining means for maintaining the pins slidably in the slots,'said pins being adapted to enter the holes in a valve head for the purpose described.

2. A- valve grinding tool comprising a wedge like body and elements movable in the wedge shaped body and adapted to be separated and to grasp the holes in a valve head, said body having means movable thereon for engaging the surface of a valve head to prevent rocking thereof, for the purpose described.

3. A valve grinding tool comprising a tapered bar, a plurality of sets of slots in the bar, pins in the slots and slidable endv wise therein, means for retaining the pins in whereby the, pin ends may be adjusted to the desired spacing, and the bar tapped down to spread the said valve head engaging pins laterally, and the remaining pins Will rest upon the surface of the valve head, for the purpose described.

4. A valve grinding tool comprising a tapered bar, a plurality of slots formed in the surface and longitudinally of said bar, collars over the bar; pins in the slots and retained endwise slidably in place by the collars, said pins being adapted to enter and engage in the holes in a valve head, for the purpose described.

5. A valve grinding tool comprising a tapered bar, slots in the bar, pins in the slots and slid'ableendwise therein and adapted to be separated by the Wedge action of the bar,'retaining means for maintaining the pins slidably in the slots, said pins having ends which are flattened at the sides, to engage the outside Wall of holes in a valve 

